Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh dong » thanh duong, thanh cong, hanh dong
dung cong » dung trong
dong cua » dung cua, cong cua, huong cua
cua dung » cua dang, cua dong, qua dung
cong van » cong vang, cong san, song van
than cau » toan cau, phan cau, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (dieu hanh)) - thanh dong cua dung cong van ((than cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (dieu hanh)) - thanh dong cua dung cong van ((than cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (dieu hanh)) - thanh dong cua dung cong van ((than cau) or (phan tu))*.